Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte

Co Founder SAP Innovation Center en la Región
4 de Apr de 2013
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte
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Capítulo VI. Sistemas de Información Gerencial, James O´Brien. - II Parte

Notas del editor

  1. Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  2. Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  3. Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  4. Telecommunications Network Components Terminals Any input/output device that uses networks to transmit or receive data Telecommunications processors Devices that support data transmission, reception Telecommunications channels Media over which data are transmitted, received Computers All sizes and types Host, front-end processor, or server Telecommunications control software Controls telecommunications activities Manages the functions of telecommunications networks Network management programs Telecommunications monitors (mainframes) Network operating systems (network servers) Web browsers (microcomputers) Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  5. Analog or digital - method used to convert information into an electrical signal Analog - power of an electrical current proportional (analogous) to the quantity The higher the value the more volts are sent 83 degrees - generate 8.3 volts Digital - quantity expressed as a number 83 degrees send on/off pulses in patterns to represent numbers in base 2 83 = 1010011 = 64+16+2+1 Twisted-Pair Wire Ordinary telephone wire Copper wire is twisted into pairs Unshielded 2 million bps Shielded 10 million bps Why difference? Coaxial Cable Sturdy copper or aluminum wire wrapped with spacers to insulate and protect it 200-500 million bps 2 – 5 times faster than twisted pair Long distance Lakes, oceans Short distance Cities, buildings Fiber-Optic Cable One or more hair-thin filaments of glass fiber wrapped in a protective jacket 100 x faster than coaxial cable Requires few repeaters The Problem of the “Last Mile” Different technologies used Network providers use fiber optic cable as a communications backbone Houses connected to the backbone are wired with twisted pair Users don’t benefit from the faster, better technology Copper media Power weakens Need repeater Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  6. Communications Satellites Geosynchronous orbit Serve as relay stations Use microwave radio signals Earth stations beam signals to the satellites Not suitable for interactive, real-time processing Time vs distance Wireless LANS Uses wireless radio-wave technology to connect PCs within an office or a building Can be high-frequency, similar to digital cellular, or low frequency (spread spectrum) Bluetooth Short-range wireless technology Connects PCs to devices, such as a printer Fairly low cost to implement Other Wireless Systems Cellular phones Mobile radio PDAs Telecommunications networks now play vital and pervasive roles in Web-enabled e-business processes Electronic commerce Enterprise collaboration Other applications that support business operations, management, and strategic objectives Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  7. Other Wireless Systems Cellular phones Mobile radio PDAs Telecommunications networks now play vital and pervasive roles in Web-enabled e-business processes Electronic commerce Enterprise collaboration Other applications that support business operations, management, and strategic objectives Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  8. Wireless Internet access is growing as Web-enabled information appliances proliferate Smart telephones, pagers, PDAs All are very thin clients in wireless networks Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  9. Most common type of communications processor Converts a digital signal to an analog frequency that can be transmitted over phone lines, then back into a digital signal Modulation and demodulation Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  10. Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  11. Traffic Management Manage network resources and traffic to avoid congestion and optimize service levels Security Provide authentication, encryption, firewall, auditing, and enforcement Network Monitoring Troubleshoot and watch over the network, alerting administrators of potential problems Capacity Planning Survey network resources, traffic patterns, and users’ needs Determine the best way to accommodate the needs of the network as it grows and changes Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  12. Protocol A standard set of rules and procedures for the control of communications in a network Handshaking The process of exchanging predetermined signals and characters so devices can agree on a communications protocol. Information transfer rate, coding alphabet, parity, interrupt procedure, and other protocol or hardware features. Network Architecture Master plan of standard protocols, hardware, software, and interfaces between end users and computer systems Goal is to promote an open, simple, flexible, and efficient telecommunications environment Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-
  13. Open Systems Interconnection (OSI) Model A seven-layer standard model for network architectures Each layer adds functions Controls how messages should be transmitted between two points in a network Guides product developers so that their products will work consistently with other products. Multimedia Lecture Support Package to Accompany Basic Marketing Lecture Script 6-